This first flight was an unmanned cargo mission. But on future missions, which will carry astronauts, the Dragon spacecraft will be equipped with a launch escape system (seen here in an illustration from SpaceX) capable of quickly carrying the capsule to safety in case of a dangerous situation during the launch sequence. Safety innovation is just the beginning.
Click on for a look at some of SpaceX's big ideas for the future of flights to the final frontier.
Upon detaching from the ISS this week, Dragon re-entered Earth's atmosphere and fell into the ocean. But in the future, the Dragon spacecraft will use its SuperDraco thrusters to land propulsively on land with pinpoint accuracy.
In 2011, SpaceX announced plans for the Falcon Heavy rocket. While the Dragon mission to the ISS carried 7,300 pounds of pressurized cargo, future missions aboard the Falcon Heavy rocket will carry around 53 tons of cargo into low-Earth orbit. Falcon Heavy will be the most powerful rocket in the world and historically is second only to the Apollo-era Saturn V moon rocket.
An artist's illustration shows SpaceX's Dragon craft using the SuperDraco thruster system to land on Mars. A worst-case scenario, Musk said, is that it takes SpaceX 20 years to land a manned mission on the red planet. Sound ambitious? We'll just have to wait and see.